Re: Can't redeem Sims 4 Expansion Pack Product Code.

@bpink1234  File a complaint with Amazon itself saying the seller sold you a defective product and refuses to make good.  It might help to include a screenshot of the code showing as already redeemed and a photo of the code itself, perhaps along with your chat with EA support.  Depending on where you live and whether you have Amazon Prime, you may be able to get a refund for the purchase.

There's no way to use the files from the disc you purchased.  Even if you were able to install the pack, the EA App would still block it from loading in-game since the App thinks you don't own it.

In the future, consider buying directly from EA during a sale.  Expansions are usually 50% off, at least in my region, with game and stuff packs having smaller discounts.